Insecticidal composition of matter



; l atent dkFeb. 16, 1926. i

plant life. f

' hmust possess ciously to the plantand leaves.

complies with I the wornklike '1 oulan STATES P A' IENT OFFICE.

NELSON 11am), on nrrno wnsr VIRGINIA; nssreiwoa T0 was RUBBER sunvrouLABORATORIES co., or minor,

OHIO, A. CORPORATION OF -OHIO.

INSEQ'IIGIOAL COMPOSITION OF MATTER,

7 No Drawing.

5 of West Vir 'nia, have invented certain new and useful provements' inan Insecticidal Composition 0 Matter, of which the following is aspecificationn .My present invention relates to an insect destroyer, andmore particularly to an insecticidal composition to be used indestroying boll-weevils,dpotato bugs, and Either insects, worms, aninsect larvae, inj ious'to The composition may also be efiectively used.in exterminating and driving away pests infesting the household, such ascock-roaches, ants, bed-bugs, and the like. The value and usefulness-ofthe composition resides not only in that the material isa violent andcertain poison to insect pests when ingested even in small quantitiesthem, but since the'composition possesses I a bitter and disagreeabletaste, when it is scattered or dusted near infestedplaces or on plantsupon which they feed, it the escape death they are driven to another feeing ground.

A. material or composition, to be used ef' fectively as an insecticide,must first of all be poisonous and fatal to insects. when consumedby'them in small quantities. However, if used'in the house, or on treesor 'vines such as apples or grapes, the fruit of which mightaccidentally be eaten without washing, the material must'be not at allpoi 'sonous, injurious or harmful to ings or animals.

one to be used on growing plants,"m

so as not to be washed off by every water,

artiallyor completely removed shower, or by every should, of course, beharmless to foliage, and

the power of adhering tena- The insecticidal composition comprising thesubject matter of the present invention,

all theifiqnditions set forth. will, as Ihavefound,1when applied togrowing plantsydestroyinsects and insect larvae, as well as wormdikepests, such above, and

as caterpillars, the army worm and the like.

1 ffThe composition herein' described is espe-v cially polsonous for'useagainst beetles and larvae of moths,.which makes various chan humanbe -An insecticide, particuv cw. Moreover, an insecticide type,and

Application filed'llarchali, 1925. Serial No. 18,313.

,i very efficacious in exterminating the potato bug, boll weevil andother harmful and destructive pests classified by entomologists in thisgreat family of insects.

With the above and other objects in view, theinvention will be mostreadily understood by'reference to vthe following detailed and it is,tobe understoodthat es and modifications, as, for example, varlations inthe proportions of the ingredients herein named, may be made,

descrlptlon,

and come within the scope of the invention.

without departing from the spirit thereof, or sacrificing the efficiencyof the same, which come within the scope of the appended claims, inwhich I intend to claim all novelty permissible in view of the priorart.

Carbon disulfid has been known to be effective for the destructionofsome forms of insect life, but its usefulness is very much limitedbecause of its high volatility and the great fire risk involved in itsuse. Amines and'imides, particularly those of the aro matic series oforganic compound such 'as aniline, phthalimidine, as well ascorresponding aliphatic compounds, such as succinimide,hexamethylenetetramine, etc, also have certain insecticidal value, andhave been experimented with to a certain extent for this purpose.Moreover, substances containing the so-called henyl group (C H such asphenol, b'enzal ehyde, benzylchloride, sodium benzoate, and the likealso possess insecticidal properties. I

and

have now found that compounds which may I be formed by the unionof-carbon disulfid and the organic bases or amines, that is, the.'thio-'ureas, :as well as other sulfur comprefer-' pounds containingthe. C= S group, ably'joined to the imino group (=N or the substitutedamino -N11 groufp, are very effective indestroying insect ]i e. The bestknown of the compounds of this the one commercially available in greatquantities at the most reasonable price,

is'i symmetrical di-phenyl-thio-urea, more "comm nly known asthio-carbanilide. It should be noted that this compound contains the-:C=S, the ='N-H and the *(G HQ groups in. its c mposition-which, aspointed out above, are present separately in a number of insecticidalcompounds. .When these three groupings-are included or combined withina' single compound, the characteristic and desirablelproperties of the"various groups are so blended and their effect so pronounced that thecompound itself is an dry state and in this form may be readily dustedon the foliage of the plant or sifted or scattered about near cracks inthe floor or distributed wherever and'whe ever it is desired. Thematerials may also, f desired, be applied as a spray wherein thecomposition is suspended in a carrier liquid as is fully set forth andclaimed in my co-pend ing a plication, Ser'iala No. 680,265, filed Decemer 12-, 1923.

Thiocarbanilide may, then, be-applied to a plant or to any lace whereinsect life exists,'by sifting t e finely ground material from acontainer, by dusting by means of an air or other gaseous blower or inany other well known manner. Although the material may be used in thecomparatively pure state and in the form as ordinarily prepared, it isnot usually 'necessary to app y it 1n such a concentrated form and forthis reason it is generally desirable to mix with the materialcomparatively large quantities of other substances to serve primarily asa solid diluent or filler of the active agent and also to, prevent anytendency that the materials may have to cake or pack together. Thus Imay mix with. the thio-. urea an equal volume or even a greater amount,for example, three or four ormc-re volumes, of such materials as starch,flour, magnesium oxide, cla'y and the like. It is also possible, andsometimes desirable to thoroughly incor orate into the mixture a smallquantity, or exam le about 2 to 5% by weight of plaster of Baris. Thismaterial, as is well known, hardens or sets when wet,'and the presenceof such a substance in my composition,particularly when the diluleavesof the plant.

ents are present in a predominating amount, will aid the composition inclinging-to the It is also possible to mix with my preferred class ofinsecticidal com ositions, certain substances which of t emselves havesome value and use as insecticides, such as lime, sulfur, sodiumfluoride, pyrethrum flowers, tobacco powder, naphthalene, borax,

copper sulfate, copper carbonate, and the like. Although for mostpurposes I prefer to employ a-thio-urea either by itself or in admixturewith inert diluents or with non poisonous insecticidal or fungicidalcompounds, yet it is possible that under certain conditions, itmigh-t bedesirable to. add my preferred composition in any desired or necessaryproportion to the older types of insecticides such as hellebore, Parisgreen, lead or calcium arsenate and the like. In

fact, the addition of my preferred type of fur. Another composition foruse on fruit,

trees, particularly the apple, comprises pounds of thioearbanilide and85 pounds of sulfur. A composition for dusting poultry and other birdsandanimals comprises pounds of thio-carbanilide and 80 parts of clay,magn,esium oxide, zinc oxide and the like or it is alone or admixed withsulfur or with sulfur and 'hellebore for this purpose. A composition foruse in the household as a remedy against cock-roaches, ants, etc.,comprises pounds of thioearbanilide and parts possible to usethio-carbanilide of starch or other filler, with or without a. 1

small quantity of a sweetening agent or otherinsecticide, if desired.

It is to be understood that by use of the word, insect, I do not limitthe use of my material to the destruction of the adult in elude broadlyall forms of insect life, and

particularly the larvae of insects, and simipounds and which may beroduced for example by the interactlon 0 carbon disulfid with aromaticamines. Such compounds may be used by themselves -if desired, or.

- sect only, but'that I intend the word to inmay be admixed with inertfilling mate- .rials or with other substances having insecticidal orfungicidal value of their own.

What I claim is 1. A dusting composition for use in destroying insectlife, which comprises a thiostroying insect life' which comprises a mix-I ture of approximately fifteen parts of thiocarbanilide, admixed withapproximately eighty-five parts of sulfur.

6. The process of destroying insect life which comprises applying afinely ground thio-urea to a plant.

7. The process of destroying insect life which comprises applying amixture of a thio-urea and an inert substantially water insoluble solidmaterial to a plant.

8. The process of destroying insect life f which comprises applying amixture of a' thio-urea and sulfur to a plant.

9. The process of destroying insect life which comprises applying amixture of thio carbanilide and sulfur to a plant.

10. The process of destroying insect life which comprises applying amixture of approximately fifteen parts of thio carbanilide andeighty-five parts of sulfur to a plant.

11. The process of destroying insect life which comprises applying adust of finely ground thio carbam ide to a plant by means of a gaseousvehicle.

CARL NELSON HAND.

